main/postmarketos-initramfs: depend on mdev-conf (MR 4807)

we need this, i think it was pulled in via some dependency before.

Signed-off-by: Caleb Connolly <caleb@connolly.tech>

main/postmarketos-initramfs/APKBUILD

@@ -2,7 +2,7 @@
 # Co-Maintainer: Clayton Craft <clayton@craftyguy.net>
 pkgname=postmarketos-initramfs
 pkgver=2.5.1
-pkgrel=0
+pkgrel=1
 pkgdesc="Base files for the postmarketOS initramfs / initramfs-extra"
 url="https://postmarketos.org"
 options="!check"  # no tests
@@ -18,6 +18,7 @@ depends="
 	e2fsprogs-extra
 	f2fs-tools
 	lz4
+	mdev-conf
 	multipath-tools
 	parted
 	postmarketos-fde-unlocker